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<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <script>
        let arr = [1, 4, 5, 6, 3]
        // for (let i = 0; i < arr.length - 1; i++) {
        //     for (let j = 0; j < arr.length - i - 1; j++) {
        //         if (arr[j + 1] < arr[j]) {
        //             let num = arr[j + 1]
        //             arr[j + 1] = arr[j]
        //             arr[j] = num


        //         }
        //     }
        // }
        arr.sort()
        console.log(arr)
    </script>
</body>

</html>